What is the colour of methyl orange in an acidic solution?
Answer and explanation
Correct answer: Red
The governing concept is indicator colour change with pH. Methyl orange is a synthetic acid-base indicator that appears red in an acidic medium, changes through orange in its transition range, and appears yellow in a sufficiently basic medium. Because the question specifies an acidic solution, the correct observation is red. Yellow corresponds to the basic side, while blue and pink are not the standard methyl-orange colours for this test. Therefore option A is correct.
Frequently asked questions
What is the correct answer to this question?
Red
Why is this the correct answer?
The governing concept is indicator colour change with pH. Methyl orange is a synthetic acid-base indicator that appears red in an acidic medium, changes through orange in its transition range, and appears yellow in a sufficiently basic medium. Because the question specifies an acidic solution, the correct observation is red. Yellow corresponds to the basic side, while blue and pink are not the standard methyl-orange colours for this test. Therefore option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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